53522391 has 8 divisors (see below), whose sum is σ = 76852720. Its totient is φ = 32936832.

The previous prime is 53522389. The next prime is 53522393. The reversal of 53522391 is 19322535.

It is an interprime number because it is at equal distance from previous prime (53522389) and next prime (53522393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53522391 - 2¹ = 53522389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53522393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686146 + ... + 686223.

It is an arithmetic number, because the mean of its divisors is an integer number (9606590).

Almost surely, 2^53522391 is an apocalyptic number.

53522391 is a deficient number, since it is larger than the sum of its proper divisors (23330329).

53522391 is a wasteful number, since it uses less digits than its factorization.

53522391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372385.

The product of its digits is 8100, while the sum is 30.

The square root of 53522391 is about 7315.8998762968. The cubic root of 53522391 is about 376.8586622236.

The spelling of 53522391 in words is "fifty-three million, five hundred twenty-two thousand, three hundred ninety-one".